CSChristian Stingl@c_stinglAustriaFollowVerified SkillsCertificate: Problem Solving (Intermediate)VerifiedCertificate: Problem Solving (Basic)VerifiedCertificate: Problem Solving (Advanced)VerifiedBadgesProblem SolvingSqlRatingsSubmissionsUser has not solved any challenges yet.Contest HistoryUser has not participated in any contests yet.DiscussionsUser doesn't have any discussions yet.